After losing another key member of Team Arrow tonight, it looks like Felicity might be the next to go, which means Oliver Queen will be flying solo next week. Come check out the new promo now!

The Green Arrow (Stephen Amell) continues his downward spiral and a week after his sister (Willa Holland) left the series for good, he had a very unusual - possibly nonsensical - but definitely very big falling out with Diggle (David Ramsey), who has been one of his most trusted friends since the very beginning of his journey as the Emerald Archer.

The hour ends with a lonely Oliver finding himself in a very sticky situation as two of Diaz's (Kirk Acevedo) employees call for his impeachment, which is something we'll surely see play out more next week. The upcoming episode will also see him possibly break ties with Felicity (Emily Bett Rickards) and get a visit from an unexpected old friend.

Watch the new promo for episode eighteen, titled "Fundamentals," below:

"Fundamentals" - (9:00-10:00 p.m. ET) (Content Rating TBD) (HDTV)

OLIVER IS VISITED BY A GHOST FROM HIS PAST - In his darkest place yet, Oliver (Stephen Amell) wonders if he has failed at everything - being a father, a mayor and a hero. His frustration rising, Oliver lashes out at Felicity (Emily Bett Rickards) and William (guest star Jack Moore). A surprising visit from an old friend has Oliver questioning his next move. Ben Bray directed the episode written by Speed Weed & Emilio Ortega Aldrich (#618). Original airdate 4/12/2018.

After a violent shipwreck, billionaire playboy Oliver Queen was missing and presumed dead for five years before being discovered alive on a remote island in the North China Sea. He returned home to Star City, bent on righting the wrongs done by his family and fighting injustice. As the Green Arrow, he protects his city with the help of Team Arrow with former soldier John Diggle, computer-science expert Felicity Smoak, his vigilante-trained sister Thea Queen, Deputy Mayor Quentin Lance, brilliant inventor Curtis Holt, and his new recruits, street-savvy Rene Ramirez and meta-human Dinah Drake. Oliver has finally solidified and strengthened his crime-fighting team only to have it threatened when unexpected enemies from his past return to Star City, forcing Oliver to rethink his relationship with each member of his “family”.

DISCLAIMER: ComicBookMovie.com is protected from liability under the DMCA (Digital Millenium Copyright Act) and "Safe Harbor" provisions. This post was submitted by a volunteer contributor who has agreed to our Code of Conduct. CBM will disable users who knowingly commit plagiarism, piracy, trademark or copyright infringement. Please contact us for expeditious removal of copyrighted/trademarked content. Learn more about our copyright and trademark policies HERE. [LESS]